./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 168416149267e0fc0b6fcb8e317e7cffdbc0bf70 ................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:12:32,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:12:32,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:12:32,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:12:32,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:12:32,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:12:32,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:12:32,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:12:32,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:12:32,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:12:32,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:12:32,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:12:32,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:12:32,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:12:32,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:12:32,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:12:32,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:12:32,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:12:32,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:12:32,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:12:32,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:12:32,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:12:32,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:12:32,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:12:32,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:12:32,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:12:32,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:12:32,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:12:32,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:12:32,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:12:32,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:12:32,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:12:32,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:12:32,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:12:32,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:12:32,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:12:32,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:12:32,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:12:32,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:12:32,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:12:32,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:12:32,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:12:32,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:12:32,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:12:32,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:12:32,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:12:32,523 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:12:32,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:12:32,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:12:32,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:12:32,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:12:32,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:12:32,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:12:32,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:12:32,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:12:32,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:12:32,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:12:32,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:12:32,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:12:32,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:12:32,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:12:32,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:12:32,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:12:32,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:12:32,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:12:32,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:12:32,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:12:32,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:12:32,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:12:32,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:12:32,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:12:32,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 168416149267e0fc0b6fcb8e317e7cffdbc0bf70 [2020-11-29 23:12:32,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:12:32,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:12:32,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:12:32,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:12:32,817 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:12:32,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i [2020-11-29 23:12:32,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/data/aad4240a8/d09c23cfbf3f45699835edc18abb4294/FLAGe0c3bd3f9 [2020-11-29 23:12:33,372 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:12:33,372 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound1.i [2020-11-29 23:12:33,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/data/aad4240a8/d09c23cfbf3f45699835edc18abb4294/FLAGe0c3bd3f9 [2020-11-29 23:12:33,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/data/aad4240a8/d09c23cfbf3f45699835edc18abb4294 [2020-11-29 23:12:33,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:12:33,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:12:33,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:12:33,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:12:33,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:12:33,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:12:33" (1/1) ... [2020-11-29 23:12:33,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5685a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:33, skipping insertion in model container [2020-11-29 23:12:33,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:12:33" (1/1) ... [2020-11-29 23:12:33,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:12:33,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:12:33,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:12:33,986 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:12:34,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:12:34,014 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:12:34,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34 WrapperNode [2020-11-29 23:12:34,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:12:34,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:12:34,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:12:34,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:12:34,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:12:34,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:12:34,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:12:34,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:12:34,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... [2020-11-29 23:12:34,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:12:34,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:12:34,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:12:34,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:12:34,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:12:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:12:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:12:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:12:34,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:12:34,506 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:12:34,506 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 23:12:34,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:34 BoogieIcfgContainer [2020-11-29 23:12:34,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:12:34,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:12:34,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:12:34,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:12:34,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:12:33" (1/3) ... [2020-11-29 23:12:34,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f12c42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:12:34, skipping insertion in model container [2020-11-29 23:12:34,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:34" (2/3) ... [2020-11-29 23:12:34,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f12c42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:12:34, skipping insertion in model container [2020-11-29 23:12:34,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:34" (3/3) ... [2020-11-29 23:12:34,517 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound1.i [2020-11-29 23:12:34,527 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:12:34,531 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 23:12:34,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 23:12:34,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:12:34,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:12:34,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:12:34,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:12:34,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:12:34,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:12:34,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:12:34,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:12:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-29 23:12:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:12:34,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:12:34,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:12:34,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:12:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash -158404674, now seen corresponding path program 1 times [2020-11-29 23:12:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:34,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374765364] [2020-11-29 23:12:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:12:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:12:34,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374765364] [2020-11-29 23:12:34,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:12:34,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:12:34,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72405698] [2020-11-29 23:12:34,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:12:34,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:12:34,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:12:34,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:12:34,758 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-29 23:12:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:12:34,772 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2020-11-29 23:12:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:12:34,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:12:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:12:34,783 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:12:34,783 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 23:12:34,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:12:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 23:12:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-29 23:12:34,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 23:12:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-29 23:12:34,834 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2020-11-29 23:12:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:12:34,835 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-29 23:12:34,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:12:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-29 23:12:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:12:34,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:12:34,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:12:34,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:12:34,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:12:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash 124542962, now seen corresponding path program 1 times [2020-11-29 23:12:34,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:34,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196273065] [2020-11-29 23:12:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:34,883 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:12:34,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395435280] [2020-11-29 23:12:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:12:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:12:34,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:12:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:12:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:12:35,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196273065] [2020-11-29 23:12:35,084 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:12:35,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395435280] [2020-11-29 23:12:35,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:12:35,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:12:35,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662187537] [2020-11-29 23:12:35,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:12:35,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:12:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:12:35,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:12:35,088 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-11-29 23:12:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:12:35,131 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-11-29 23:12:35,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:12:35,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 23:12:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:12:35,133 INFO L225 Difference]: With dead ends: 41 [2020-11-29 23:12:35,133 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 23:12:35,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:12:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 23:12:35,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-29 23:12:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 23:12:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-29 23:12:35,139 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2020-11-29 23:12:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:12:35,140 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-29 23:12:35,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:12:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-29 23:12:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:12:35,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:12:35,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:12:35,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:12:35,367 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:12:35,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:35,367 INFO L82 PathProgramCache]: Analyzing trace with hash -787061319, now seen corresponding path program 1 times [2020-11-29 23:12:35,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:35,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545621416] [2020-11-29 23:12:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:35,388 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:12:35,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448474395] [2020-11-29 23:12:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:12:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:12:35,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:12:35,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:12:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:12:35,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545621416] [2020-11-29 23:12:35,504 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:12:35,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448474395] [2020-11-29 23:12:35,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:12:35,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:12:35,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650683478] [2020-11-29 23:12:35,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:12:35,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:12:35,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:12:35,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:12:35,507 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-11-29 23:12:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:12:35,571 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-11-29 23:12:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:12:35,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 23:12:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:12:35,573 INFO L225 Difference]: With dead ends: 34 [2020-11-29 23:12:35,573 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 23:12:35,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:12:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 23:12:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 23:12:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 23:12:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-29 23:12:35,579 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2020-11-29 23:12:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:12:35,580 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-29 23:12:35,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:12:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-29 23:12:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:12:35,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:12:35,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:12:35,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:12:35,782 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:12:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1341347418, now seen corresponding path program 1 times [2020-11-29 23:12:35,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:35,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350451606] [2020-11-29 23:12:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:35,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:12:35,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521014226] [2020-11-29 23:12:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:12:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:12:35,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:12:35,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:12:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:12:35,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350451606] [2020-11-29 23:12:35,944 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:12:35,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521014226] [2020-11-29 23:12:35,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:12:35,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:12:35,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40730710] [2020-11-29 23:12:35,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:12:35,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:12:35,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:12:35,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:12:35,946 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2020-11-29 23:12:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:12:35,981 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-29 23:12:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:12:35,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 23:12:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:12:35,982 INFO L225 Difference]: With dead ends: 19 [2020-11-29 23:12:35,982 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:12:35,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:12:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:12:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:12:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:12:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:12:35,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-29 23:12:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:12:35,984 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:12:35,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:12:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:12:35,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:12:36,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:12:36,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:12:36,260 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 23:12:36,260 INFO L274 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-11-29 23:12:36,261 INFO L270 CegarLoopResult]: At program point L19-1(line 42) the Hoare annotation is: false [2020-11-29 23:12:36,261 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-11-29 23:12:36,261 INFO L277 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: true [2020-11-29 23:12:36,261 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 23:12:36,261 INFO L274 CegarLoopResult]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2020-11-29 23:12:36,261 INFO L274 CegarLoopResult]: For program point L40(lines 40 49) no Hoare annotation was computed. [2020-11-29 23:12:36,261 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-11-29 23:12:36,262 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2020-11-29 23:12:36,262 INFO L270 CegarLoopResult]: At program point L36-3(lines 36 39) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 0 ~counter~0)) [2020-11-29 23:12:36,262 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:12:36,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:12:36,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:12:36,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 23:12:36,262 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-11-29 23:12:36,263 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-11-29 23:12:36,263 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-29 23:12:36,263 INFO L274 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-11-29 23:12:36,263 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-11-29 23:12:36,263 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 23:12:36,263 INFO L274 CegarLoopResult]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2020-11-29 23:12:36,263 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 23:12:36,264 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-29 23:12:36,264 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-29 23:12:36,264 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-29 23:12:36,264 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:12:36,264 INFO L277 CegarLoopResult]: At program point L51(lines 26 52) the Hoare annotation is: true [2020-11-29 23:12:36,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:12:36 BoogieIcfgContainer [2020-11-29 23:12:36,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:12:36,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:12:36,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:12:36,280 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:12:36,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:34" (3/4) ... [2020-11-29 23:12:36,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:12:36,293 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-29 23:12:36,294 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:12:36,294 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:12:36,294 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:12:36,340 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_daa35363-9d6f-49a6-8b22-29fa5964e269/bin/uautomizer/witness.graphml [2020-11-29 23:12:36,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:12:36,342 INFO L168 Benchmark]: Toolchain (without parser) took 2604.63 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 36.2 MB in the end (delta: 36.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:36,343 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:12:36,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.51 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 78.2 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:36,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.06 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:36,348 INFO L168 Benchmark]: Boogie Preprocessor took 23.20 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:12:36,349 INFO L168 Benchmark]: RCFGBuilder took 432.34 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 61.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:36,349 INFO L168 Benchmark]: TraceAbstraction took 1768.86 ms. Allocated memory is still 100.7 MB. Free memory was 60.9 MB in the beginning and 39.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:36,350 INFO L168 Benchmark]: Witness Printer took 61.41 ms. Allocated memory is still 100.7 MB. Free memory was 39.6 MB in the beginning and 36.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:36,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.51 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 78.2 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.06 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.20 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 432.34 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 61.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1768.86 ms. Allocated memory is still 100.7 MB. Free memory was 60.9 MB in the beginning and 39.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 61.41 ms. Allocated memory is still 100.7 MB. Free memory was 39.6 MB in the beginning and 36.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (q == 0 && A == r) && 0 <= counter - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 19 SDslu, 77 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 13 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1766 SizeOfPredicates, 7 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...